Results from using an in vitro tissue bath technique indicated that propranolol and preferential beta(2)-adrenoceptor antagonists (ICI-118,551 and butoxamine), in a concentration-dependent manner, blocked the relaxation induced by nicotine (100 microM) without affecting the relaxation elicited by transmural nerve stimulation (TNS, 8 Hz). (lookformedical.com)
Antagonists1
Using beta subtype selective antagonists (atenolol (beta1) and butoxamine (beta2)), N-caffeoyltyramine was found to increase cAMP mainly via beta 2-adrenoceptor in U937 cells. (usda.gov)
Selective1
Butaxamine (INN, also known as butoxamine) is a β2-selective beta blocker. (wikipedia.org)